Fig. 7: Effects of TLR4 inhibitor on intestinal innate immunity and pathological α-Syn expression.

a, b Western blot analysis for TLR4, MyD88, NF-κB, CD68 and CD163 protein levels in the small intestine of WT, LRRK2R1627P and LRRK2−/− rats treated with saline (control) or TLR4 inhibitor (TAK-242), n = 4. One-way ANOVA was used. c Immunofluorescence staining images and quantification of CD68/IL-6 (green) and CD163/iNOS/pS129-α-Syn (red) positive cells in the small intestinal LP of rats treated with saline (control) or TLR4 inhibitor (TAK-242). Nuclei were stained with DAPI (blue). Scale bar 100 μm, n = 4. Two-way ANOVA was used; for CD68/IL-6/iNOS analysis interaction p < 0.01; for CD163 analysis interaction p > 0.05; for pS129-α-Syn analysis interaction p < 0.001. d GO enrichment analysis for DEGs in ConRP vs ConWT, TAKRP vs ConRP, TAKRP vs ConWT, n = 3. e Heatmap of DEGs from ConWT, ConRP and TAKRP group, n = 3. Data are presented as mean ± SEM, *p < 0.05, **p < 0.01.